论文部分内容阅读
2017年4月17-21日,河南省鱼类资源调查队在许昌市水产技术推广站的协助下,完成了许昌市区的鱼类资源调查工作。共设置采捕样点20个和采集样点2个。采捕获得鱼类33种,隶属于5目10科28属,其中鲤形目种类最多,占总种数的69.05%,其次鲈形目占总种数的15.15%,鲇形目和合鳃目均为2种,各占总种数的6.06%,鹤鱵鱼目只有1种,占总种数的3.03%。许昌市鱼类物种多样性指数较高,Margalef物种丰富度指数平均值为2.88,Shannon-Wiener物种多样性指数平均值为2.93。调查结果显示:许昌市鱼类在摄食、繁殖及栖息习性等方面呈现多样化特征,鱼类物种多样性指数较高。根据鱼类区系复合体学说,许昌市鱼类资源主要以江河平原区系复合体种类为主。
April 17-21, 2017, Henan Province Fish Resources Investigation Team completed the investigation of fish resources in downtown Xuchang with the assistance of the Xuchang Aquatic Technology Extension Station. Set a total of 20 sampling points and collection sampling point 2. There were 33 species of fish belonging to 5 orders, 10 families and 28 genera, of which, Cyprinidae species accounted for 69.05% of the total species, followed by Perciformes species for 15.15% of the total species. There are 2 species, accounting for 6.06% of the total species, only 1 species of cranefish, accounting for 3.03% of the total species. Xuchang City, fish species diversity index is higher, Margalef species richness index average 2.88, Shannon-Wiener species diversity index average 2.93. The survey results showed that the fish in Xuchang City showed diversified characteristics in feeding, reproduction and habitat habits, and the fish species diversity index was high. According to the theory of fish fauna complex, the fish resources in Xuchang City are mainly dominated by the complex types of fauna in rivers and plains.